S Korea's President Park rules out Japan summit
4 November 2013 Last updated at 00:08 GMT
South Korea's president has highlighted a deep rift with Japan, as the region struggles to rein in North Korea's growing nuclear capability.
President Park Geun-hye told the BBC she saw no point in a summit with the Japanese leader unless the country apologised for war-time "wrongdoings".
Concern over regional security has grown in the past year, following North Korea's third nuclear test in February.
Ms Park said nations had to break the "vicious cycle" of Pyongyang's actions.
She said her country would take "firm and unremitting action" in response to any military provocation from North Korea.
The South Korean president was speaking to the BBC's Lucy Williamson ahead of a visit to the UK, which begins this week.